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The item comprises of observations made as Madras equatorial Observations of minor planet Irene of its discovery and observation staken at several periods of time by N.R. Pogson.

The item comprises observations made as Madras Equatorial Observations of Comet Encke; its observations were taken in August 1878 by N.R. Pogson. Encke's Comet (official designation: 2P/Encke) is a periodic comet that completes an orbit of the Sun once every 3.3 years.

The item comprises of observations made as Madras equatorial Observations of minor planet Mausicaa of its discovery and observation staken at several periods of time by N.R. Pogson.

The item comprises observations made as Madras Equatorial Observations of the 1882 comet; its observations were taken from September to November 1882 by N.R. Pogson. The Great Comet of 1882, formally designated C/1882 R1, 1882 II, and 1882b, was a comet that became very bright in September 1882.

The item comprises observations made as Madras Equatorial Observations of an unknown Comet; its observations were taken on 22 January 1884 by N.R. Pogson.

The item contains Madras equatorial observations of the moon's partial eclipse that occurred on the dates 01 May 1874recorded by N. R Pogson from Madras Observatory.

The item contains Madras equatorial observations of the occultation of the planet Saturn that occurred on 2 April 1866 by N. R. Pogson.

The item contains Madras equatorial observations of the occultation of Venus that occurred in three different dates; 18 July, 1865, 3 November 1872 and 2 may 1875 recorded by N. R Pogson from Madras Observatory.

The item contains Madras equatorial observations of the moon's total eclipse that occurred from 1866 to 1888. N. R Pogson recorded these observations from Madras Observatory.

The item comprises observations made as Madras Equatorial Observations of transit of Mercury occurred on the 11th and 12th of November 1861 by N.R. Pogson. The document contains observational data and critical notes about the astronomical event. Mercury's transit across the Sun occurs when the planet Mercury passes directly between the Sun and a superior planet.